For service and parts needs, visit your dealer. You will receive genuine GM parts and GM-trained and supported service people.
Genuine GM parts have one of these marks:

Vehicle Care
California Proposition 65 WarningDoor Ajar Indicator Description and Operation
Door Ajar Indicator System Components
The door ajar indicator system consists of the following components:
Body control module (BCM)
Instrument cluster
Driver information center
Driver door latch
Passenger door latch
Left rear door latch
Right rear door latch
Liftgate door latch
...
Rear Side Door Adjustment
Rear Side Door
Caution: Refer to Fastener Caution in the Preface section.
Procedure
Loosen the rear door hinge bolt (Qty: 4) to adjust the rear door.
Adjust the rear door in order to obtain an even gap between the rear
door and the roof, the quarter outer panel, the
rocker pan ...
Hands-Free Phone
Using Bluetooth Voice Recognition
To use voice recognition, press the
button on the steering wheel.
Use the commands below for the various voice features. For additional information,
say “Help” while in a voice recognition menu.
Making a Call
Calls can be made using the following commands.
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